On 1/5/21 8:21 AM, Zachary Streeter wrote:
Let me know if this is okay. This compiled, ran, and produced the same error
on my end.
Yes, that's the sort of testcase that makes it easy to debug :-)
In this call,
m_H1.reinit(MPI_COMM_WORLD,
a_local_row_set.size(),
a_local_row_set.size(),
a_local_row_set.n_elements(),
a_local_row_set.size(),
guess);
the 'local_columns' given in the fifth argument also need to add up to the
total number of columns. So if you change this to
m_H1.reinit(MPI_COMM_WORLD,
a_local_row_set.size(),
a_local_row_set.size(),
a_local_row_set.n_elements(),
a_local_row_set.n_elements(),
guess);
then things run fine.
That said, this specific function is deprecated:
https://dealii.org/developer/doxygen/deal.II/classPETScWrappers_1_1MPI_1_1SparseMatrix.html#a645ab9f99494a47ebb6492e92e707130
You will want to use the suggested alternative.
Best
W.
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